I happened to get a mouse that was pregnant. She has had her babies and this is day 12. Some of them have wandered out of the nest, but Mom put them back. They were covered in white fur and looked so cute. Eyes still closed.

I have two females who came home to me pregnant! They both had their babies about the same time. I am a little put off by the pet shop not separating the "daddy" from the women. But I think it didn't matter to them, as they were probably to be snake food. So I rescued these sweethearts.Nevertheless, I am excited! Since they both gave birth about the same time, and right now have their babies apart, will they know their own babies after they are walking around. Seven came out today, but the Mommie sent them right back in to the nest. She even picked one up and carried it. On day 27 I will be separating the boys from the girls. I plan to keep them all. I have 4 cages ready. I hope I don't have too many boys or I will have to relocate some of them. Boo hoo. They all look healthy.My old girl (for whom I got these new ones) has been acting as Gramma and seems to be happy about the newcomers.I have printed out the picture to identify boy from girl, so wish me luck!

I have a question for you. If one litter was born a day or two before the other, when I go to separate, I am afraid I won't be able to tell which baby belonged to which litter, (if they're walking around) will it be harmful if I separate the bit younger babies too soon?Do you have any suggestions? Neither litter is coming out to walk around yet, but the mothers look alike and I don't want to take out one group now in case I get the wrong mother. Am I confusing anyone as confused as I am???

separating them 2 days early would be better than leaving them in two days longer. so separate at 4 weeks on the nose from the date the first litter was born. just supplement the newly weaned boys with a little extra protein, like mealworms, scrambled egg, or cooked chicken.

Interesting question... Since the nests are mixed (they're mixed right?) and the babies likely all smell the same because they're most likely being nursed by both of the moms, I imagine she'd probably just think of them all as hers.

I don't think they are "mixed" yet, as one group is a few days older than the other because they have their eyes open and the other doesn't. This all happened at the pet store and, of course, they didn't look pregnant when I bought them.My concern is that when separating them as male and female, will the second group be weaned too early and perhaps Mommie hasn't taught them to eat and drink yet at that time. Should I move the second Mommie and her kids to another cage now and wait a couple more days to identify her boys from girls? Or, should I just leave them alone?

@scaredymouse had good advice about just separating all the males at the same time. It's actually okay to separate males at 21 days, but that's drastic, rarely needed, and not recommended unless Mom has back to back litters or something. Moms start to wean once eyes open and babies start eating solid foods. A day or two before 28 days wouldn't make much difference.

If you really want to move one litter, though, I think it would be safest to move the litter whose eyes are open. Move as much of the bedding from the old cage (and the nest) into the new cage as you can so they have a familiar "home" smell.

_________________Always believe that something wonderful is about to happen.

I think there are about 20 babies. Many are running around the cage and nibbling at Mom's food dish. I noticed in the second litter that one is a tiny runt. There is also a very large one! All the rest seem about the same size. Is there anything we can do for the little runt?

Poor baby runt! I had one in my litter too, he's stayed pretty small. I made sure to give him first access to high protein extras like eggs, chicken and worms. If he looks healthy otherwise, i would just make sure he's getting food and doesn't have to fight it. Once their eyes are open, they want to eat everything! Just take him out by himself and let him eat whatever he wants ❤